I recommend to read "Naked Ape" from Desmond Morris and you will realize that you all are not a super being. You are just an animal with a bigger brain (only double the amount of cells of some apes out there).

The humans are just too self-confident at the one hand and they are believers in super natural beings at the other hand. But at the end they are just part of this world, just a naked ape with a few more neurons in there brains.

If you all have a spirit then the dogs also have. Look into their eyes and you will even recognize it.
But this "spirit" is just a word for a natural thing.
You can discuss this to death but it will not change anything.
If you kill another being then you kill another spirit (more or less conscious).